A screening device for a planter

Abstract

The utility model relates to the technical field of seed screening, and specifically discloses a screening device for a seeding machine, which comprises a screening bin, a filter plate is fixedly connected in the screening bin, a moving bin and a lifting bin are fixedly connected to the side wall of the screening bin, a moving lead screw is rotatably connected in the moving bin, the filter plate is used to filter corn seeds, the filter plate is used to speed up the filtering through a scraper, and the lifting gear outside is driven to rotate through the setting of the connecting rack while the scraper moves, thereby driving the cleaning plate below the filter plate to ascend, the cleaning head is inserted into the filter plate during the ascending process, the corn seeds stuck in the filter plate are ejected, so that the filter plate is prevented from being blocked, the waste particles filtered out finally fall into the second collecting drawer, the qualified seeds reach the discharging chute, and finally enter the seeding machine to be sowed.

Description

Technical Field

[0001] This utility model relates to the field of seed screening technology, specifically to a screening device for a seeder. Background Technology

[0002] Seeders are common agricultural machinery used in agricultural production. They are planting machines that sow crop seeds and are mainly used for sowing small seeds such as grains, vegetables, and forage grasses.

[0003] CN206276611U discloses a grain screening device for corn planting, comprising a corn grain storage box and a corn grain screening box. The top of the corn grain storage box has a feed inlet. One end of the bottom of the corn grain storage box is connected to one end of the top of the corn grain screening box via a conveying pipe. The other end of the bottom of the corn grain storage box is connected to the other end of the top of the corn grain screening box via a bracket. An inclined screen plate is installed inside the corn grain screening box. Mounting plates are arranged around the bottom of the corn grain screening box. The inclined screen plate has several evenly distributed small screen holes. One end of the inclined screen plate has a discharge port located on the corn grain screening box. The mounting plate has evenly distributed threaded holes. The corn grain screening box is installed on a corn planter via the threaded holes and bolts, and the discharge port is connected to the seeder of the corn planter via a conduit. This device can be installed on a corn planter to perform seed screening and sowing simultaneously.

[0004] In the prior art, corn seeds are stored in a storage box in the aforementioned device. When sowing is needed, the baffle inside the storage box is opened, which, together with the inclined sieve plate below the baffle, filters the seeds. However, it has been found that after the baffle is opened, the corn seeds above the baffle fall onto the inclined sieve plate due to inertia, while the seeds at the other end of the baffle accumulate in the storage box and cannot fall. At the same time, after the corn seeds pass through the inclined sieve plate, some seeds get stuck in the holes of the sieve plate. Over time, this will gradually clog the sieve plate, thus affecting the filtration effect. Utility Model Content

[0005] The purpose of this invention is to provide a screening device for a seeder.

[0006] The objective of this utility model can be achieved through the following technical solutions: A screening device for a seeder includes a screening chamber; a filter plate is fixedly connected inside the screening chamber; a movable chamber and a lifting chamber are fixedly connected to the side wall of the screening chamber; a movable screw is rotatably connected inside the movable chamber; a scraper is threaded onto the movable screw; the scraper is positioned above the filter plate; a lifting screw is rotatably connected inside the lifting chamber; a cleaning plate is threaded onto the lifting screw; a cleaning head is fixedly connected to the cleaning plate; multiple sets of cleaning heads are provided; the cleaning plate is located below the filter plate.

[0007] Furthermore, a connecting arm is fixedly connected to the side wall of the scraper; the connecting arm passes through the movable chamber; a connecting rack is fixedly connected to the end of the connecting arm away from the scraper; a lifting gear is rotatably connected to the top of the lifting chamber; the output end of the lifting gear is fixedly connected to the input end of the lifting screw; the connecting rack is movably engaged with the lifting gear; the lifting chamber is located in the middle of the screening chamber.

[0008] Furthermore, the screening chamber is equipped with an inclined plate and a conveying chamber; the conveying chamber is located below the inclined plate; the bottom of the conveying chamber has filter holes and a feeding trough; multiple sets of filter holes are provided; a conveying shaft is rotatably connected inside the conveying chamber; conveying blades are fixedly connected to the conveying shaft; holes are provided on the conveying blades; multiple sets of holes are provided; a feeding channel is provided on the inclined plate; a collection chamber is fixedly connected to the bottom of the conveying chamber; the collection chamber is located below the filter holes; a collection drawer is slidably connected inside the collection chamber.

[0009] Furthermore, a baffle is fixedly connected to the side wall of the screening chamber; the baffle is located below the cleaning plate; and a collection drawer is slidably connected to the baffle.

[0010] Furthermore, a feeding chute is fixedly connected to the side wall of the screening chamber; two sets of feeding chute are provided; one end of the feeding chute is located above the filter plate, and the other end is located below the baffle.

[0011] Furthermore, a first pulley is rotatably connected to the side wall of the screening chamber; the input end of the first pulley is fixedly connected to the output end of the conveyor shaft; a second pulley is rotatably connected to the side wall of the moving chamber; the output end of the second pulley is fixedly connected to the input end of the moving screw; and a connecting belt is sleeved on the first pulley and the second pulley.

[0012] Furthermore, a conveyor motor is fixedly connected to the side wall of the screening chamber; the conveyor shaft is driven by the conveyor motor; the conveyor motor is a shaft motor.

[0013] Furthermore, the moving lead screw and the lifting lead screw are configured as trapezoidal lead screws.

[0014] The beneficial effects of this utility model are: (1) This utility model achieves the filtration of corn seeds through a filter plate, and the filtration is accelerated by a scraper at the same time. While the scraper moves, the external lifting gear is driven to rotate through the setting of the connecting rack, which in turn drives the cleaning plate below the filter plate to rise. During the rising process, the cleaning head is inserted into the filter plate to push out the corn seeds stuck in the filter plate, thereby avoiding the filter plate from becoming blocked. Finally, the filtered waste grains will fall into the collection tray 2, and the qualified seeds will reach the feeding chute and finally enter the seeder for sowing.

[0015] (2) This utility model can perform coarse filtration of corn seeds in the screening chamber through the conveying chamber and the inclined plate. At the same time, the speed of corn seeds falling can be controlled by the setting of the conveying blades. And the inclined plate can slide on the slide plate when the corn seeds are conveyed in the conveying chamber, thereby avoiding the accumulation of corn seeds and the situation where they cannot fall. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the screening chamber in this utility model; Figure 2 This is a schematic diagram of the overall structure of the feeding chute in this utility model; Figure 3 This is a cross-sectional view of the overall structure of the screening chamber in this utility model; Figure 4 This is a cross-sectional view of the overall structure of the conveying bin in this utility model; Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0018] Reference numerals: 1. Screening bin; 2. Inclined plate; 3. Discharge channel; 4. Conveying bin; 5. Conveying shaft; 6. Conveying blade; 7. Hole; 8. Conveying motor; 9. Collection bin; 10. Collection drawer one; 12. Filter plate; 13. Cleaning plate; 14. Cleaning head; 15. Baffle; 16. Collection drawer two; 17. Discharge chute; 18. Moving bin; 19. Moving screw; 20. Scraper; 21. Lifting bin; 22. Lifting screw; 23. Lifting gear; 24. Connecting arm; 25. Connecting rack; 26. Pulley one; 27. Pulley two; 28. Connecting belt; 29. ​​Filter hole; 30. Discharge chute. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please refer to the attached diagram. Figures 1-5As shown in the figure, a screening device for a seeder in this embodiment of the present invention includes a screening chamber 1; a filter plate 12 is fixedly connected inside the screening chamber 1; a movable chamber 18 and a lifting chamber 21 are fixedly connected to the side wall of the screening chamber 1; a movable screw 19 is rotatably connected inside the movable chamber 18; a scraper 20 is threadedly connected to the movable screw 19; the scraper 20 is positioned above the filter plate 12; a lifting screw 22 is rotatably connected inside the lifting chamber 21; a cleaning plate 13 is threadedly connected to the lifting screw 22; a cleaning head 14 is fixedly connected to the cleaning plate 13; multiple sets of cleaning heads 14 are provided; the cleaning plate 13 is located below the filter plate 12. During operation, firstly, connect and fix the screening chamber 1 to the seeder. The connection method can be either bolted or snap-fit; the connection method is not shown in the diagram. After connection, pour the corn seeds to be sown into the screening chamber 1. Then, the shriveled and unqualified corn seeds are filtered through the filter plate 12 inside the screening chamber 1. During filtration, the moving screw 19 inside the moving chamber 18 rotates. When the moving screw 19 rotates, it drives the threaded scraper 20 to move back and forth on the filter plate 12, thereby moving the corn seeds on the filter plate 12. This movement accelerates the filtration of the corn seeds. Simultaneously, the seeds are scraped off the filter plate by the scraper 20. The scraping action on plate 12 also prevents corn seeds from accumulating on the filter plate 12 and affecting the subsequent filtration of corn seeds. The corn seeds cleaned by the scraper 20 will reach the planter for sowing. When the moving screw 19 rotates, the lifting screw 22 in the lifting chamber 21 also rotates. When rotating, it will drive the cleaning plate 13 to move towards the filter plate 12. The cleaning plate 13 is equipped with multiple sets of cleaning heads 14, which can be inserted into the filter plate 12 to push out the corn kernels stuck in the filter plate 12. Then, through the movement of the scraper 20, they will be filtered down from the filter plate 12 again, preventing unqualified seeds from getting stuck in the filter plate 12 and clogging the filter plate 12.

[0021] like Figure 4 As shown, a connecting arm 24 is fixedly connected to the side wall of the scraper 20; the connecting arm 24 passes through the movable chamber 18; a connecting rack 25 is fixedly connected to the end of the connecting arm 24 away from the scraper 20; a lifting gear 23 is rotatably connected to the top of the lifting chamber 21; the output end of the lifting gear 23 is fixedly connected to the input end of the lifting screw 22; the connecting rack 25 is movably engaged with the lifting gear 23; the lifting chamber 21 is located in the middle of the screening chamber 1. During operation, when the scraper 20 moves, it will drive the connecting arm 24 to move. When the scraper 20 reaches the middle of the filter plate 12, the connecting rack 25 on the connecting arm 24 will mesh with the lifting gear 23, and drive the lifting gear 23 to rotate during subsequent movement, thereby driving the cleaning plate 13 to rise, thus cleaning the filter plate 12. When the connecting rack 25 contacts the lifting gear 23, it first drives the cleaning plate 13 to rise. When the connecting rack 25 moves halfway, the cleaning plate 13 rises to the highest point of the lifting screw 22. Then, when it rotates again, the lifting screw 22 will drive the cleaning plate 13 to fall. When the connecting rack 25 moves away from the lifting gear 23, the cleaning head 14 disengages from the filter plate 12.

[0022] like Figure 3 As shown, the screening chamber 1 is equipped with an inclined plate 2 and a conveying chamber 4; the conveying chamber 4 is located below the inclined plate 2; the bottom of the conveying chamber 4 has filter holes 29 and a feeding trough 30; multiple sets of filter holes 29 are provided; a conveying shaft 5 is rotatably connected inside the conveying chamber 4; conveying blades 6 are fixedly connected to the conveying shaft 5; holes 7 are provided on the conveying blades 6; multiple sets of holes 7 are provided; a feeding channel 3 is provided on the inclined plate 2; a collection chamber 9 is fixedly connected to the bottom of the conveying chamber 4; the collection chamber 9 is located below the filter holes 29; a collection tray 10 is slidably connected inside the collection chamber 9. During operation, corn seeds enter the screening chamber 1 and are guided by the inclined plate 2 to the feeding channel 3, and then to the conveying chamber 4 below. When sowing is required, the conveying shaft 5 in the conveying chamber 4 is driven to rotate, and the conveying blades 6 are used to convey the corn seeds to the feeding trough 30. At the same time, the corn seeds are coarsely filtered through the filter holes 29 below. The filtered waste particles fall into the collection chamber 9 and are collected by the collection tray 10. After the operation is completed, the collection tray 10 can be removed and cleaned. At the same time, multiple sets of holes 7 are opened on the conveying blades 6 to speed up the conveying of corn seeds and prevent the corn seeds from clogging in the conveying chamber 4. The corn seeds conveyed by the conveying chamber 4 will fall onto the filter plate 12 below for further filtration. When sowing is not required, there is no need to drive the conveying shaft 5 to rotate, and the corn seeds will stay above the conveying chamber 4 and the inclined plate 2.

[0023] like Figure 3 As shown, a baffle 15 is fixedly connected to the side wall of the screening chamber 1; the baffle 15 is located below the cleaning plate 13; a collection tray 16 is slidably connected to the baffle 15; During operation, the waste particles filtered by the filter plate 12 will be collected in the collection drawer 16.

[0024] like Figure 3As shown, a feeding chute 17 is fixedly connected to the side wall of the screening chamber 1; two sets of feeding chute 17 are provided; one end of the feeding chute 17 is located above the filter plate 12, and the other end is located below the baffle 15. During operation, the intact seeds that are retained by the filter plate 12 will be pushed by the scraper 20 into the feeding slides 17 on both sides. Through the feeding slides 17, they can pass over the baffle 15 and reach the bottom of the screening chamber 1 where they connect with the seeder, and finally be sown.

[0025] like Figure 2 As shown, a pulley 26 is rotatably connected to the side wall of the screening chamber 1; the input end of the pulley 26 is fixedly connected to the output end of the conveying shaft 5; a pulley 27 is rotatably connected to the side wall of the moving chamber 18; the output end of the pulley 27 is fixedly connected to the input end of the moving screw 19; a connecting belt 28 is sleeved on the pulley 26 and the pulley 27. During operation, when the conveyor shaft 5 rotates, it will drive pulley 26 to rotate, which in turn will drive pulley 27 to rotate via the connecting belt 28. When pulley 27 rotates, it will drive the moving screw 19 to rotate, thereby driving the scraper 20 and the cleaning plate 13 to work. Among them, pulley 26 and pulley 27 are synchronous pulleys, and the connecting belt 28 is a synchronous belt.

[0026] like Figure 1 As shown, a conveyor motor 8 is fixedly connected to the side wall of the screening chamber 1; the conveyor shaft 5 is driven by the conveyor motor 8; the conveyor motor 8 is a shaft motor. During operation, the conveyor shaft 5 is driven to rotate by the conveyor motor 8.

[0027] like Figure 4 As shown, the moving lead screw 19 and the lifting lead screw 22 are trapezoidal lead screws; During operation, the moving lead screw 19 and the lifting lead screw 22 are commonly used trapezoidal lead screws on the market, and both are bidirectional, which can convert rotary motion into linear motion.

[0028] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A screening device for a seeder, characterized in that, The system includes a screening chamber (1); a filter plate (12) is fixedly connected inside the screening chamber (1); a movable chamber (18) and a lifting chamber (21) are fixedly connected to the side wall of the screening chamber (1); a movable screw (19) is rotatably connected inside the movable chamber (18); a scraper (20) is threaded onto the movable screw (19); the scraper (20) is positioned above the filter plate (12); a lifting screw (22) is rotatably connected inside the lifting chamber (21); a cleaning plate (13) is threaded onto the lifting screw (22); a cleaning head (14) is fixedly connected to the cleaning plate (13); multiple sets of cleaning heads (14) are provided; and the cleaning plate (13) is located below the filter plate (12).

2. The screening device for a seeder according to claim 1, characterized in that, A connecting arm (24) is fixedly connected to the side wall of the scraper (20); the connecting arm (24) is disposed through the moving chamber (18); a connecting rack (25) is fixedly connected to the end of the connecting arm (24) away from the scraper (20); a lifting gear (23) is rotatably connected to the top of the lifting chamber (21); the output end of the lifting gear (23) is fixedly connected to the input end of the lifting screw (22); the connecting rack (25) is movably engaged with the lifting gear (23); the lifting chamber (21) is located in the middle of the screening chamber (1).

3. A screening device for a seeder according to claim 2, characterized in that, The screening chamber (1) is provided with an inclined plate (2) and a conveying chamber (4); the conveying chamber (4) is located below the inclined plate (2); the bottom of the conveying chamber (4) is provided with filter holes (29) and a feeding trough (30); multiple sets of filter holes (29) are provided; a conveying shaft (5) is rotatably connected inside the conveying chamber (4); a conveying blade (6) is fixedly connected to the conveying shaft (5); holes (7) are provided on the conveying blade (6); multiple sets of holes (7) are provided; a feeding channel (3) is provided on the inclined plate (2); a collection chamber (9) is fixedly connected to the bottom of the conveying chamber (4); the collection chamber (9) is located below the filter holes (29); a collection tray (10) is slidably connected inside the collection chamber (9).

4. A screening device for a seeder according to claim 3, characterized in that, The side wall of the screening chamber (1) is fixedly connected to a baffle (15); the baffle (15) is located below the cleaning plate (13); a collection tray (16) is slidably connected to the baffle (15).

5. A screening device for a seeder according to claim 4, characterized in that, The side wall of the screening chamber (1) is fixedly connected to a feeding chute (17); the feeding chute (17) is provided in two sets; one end of the feeding chute (17) is located above the filter plate (12), and the other end is located below the baffle (15).

6. A screening device for a seeder according to claim 5, characterized in that, The screening chamber (1) is rotatably connected to a pulley (26); the input end of the pulley (26) is fixedly connected to the output end of the conveying shaft (5); the moving chamber (18) is rotatably connected to a pulley (27); the output end of the pulley (27) is fixedly connected to the input end of the moving screw (19); a connecting belt (28) is sleeved on the pulley (26) and the pulley (27).

7. A screening device for a seeder according to claim 6, characterized in that, The side wall of the screening chamber (1) is fixedly connected to a conveyor motor (8); the conveyor shaft (5) is driven by the conveyor motor (8); the conveyor motor (8) is a shaft motor.

8. A screening device for a seeder according to claim 7, characterized in that, The moving lead screw (19) and the lifting lead screw (22) are trapezoidal lead screws.

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